rrrrrrkevin wrote:I have 2 master no.140's ...
Do they have security pins or something? I definetly cannot get the one that opens with the long W to open when i use as much tension as it looks like you are using.
Yes the Master 140s contain spools.
Therefore, I would suggest continuing to use light tension.
If you have not picked spools before, get a deadbolt cylinder, have a look at digital_blue's picking tutorial, and once you are comfortable picking it with 5 normal top pins, reduce the number of pin stacks again, and add a single spool. You can then learn how the spool repsonds, and the feedback associated with a false-set spool, how to identify the spool, and how to control the tension to allow you to set it, without dropping other pins (not always possible.)
Then, as in d_b's guide, add more pins, until you are working on a five pin lock with one spool, and then progressively substitue more spools for normal top pins as you improve.
I do not reccommend learning about security pins on a padlock - learning hwo spools respond requires good tension control, and for the new picker, having to balance tension against the latch-spring of the padlock is challenging. The feedback from a cheap Master lock with sloppy tolerances is also poor.
You will be able to feel, identify, and then pick spool and other security pins if you learn about them in a deadlock cylinder, which doesn't have counter-tension on it from a spring. You can then easily progress to tackling spools in padlocks too.
Having said that, by all means keep working on your Master #140 - keep the tension light, try to feel when you reach a false set due to the spools, learn to feel out where the spools are. But as said above, if you are just beginning, I'd advice learning security pins (and picking in general for that matter) on a simple deadlock cylinder.
The master locks tend to be so sloppy that it is hard to accurately learn to recognise the feedback from security pins - and this is another advantage of using a deadbolt cylinder (with better tolerances than the cheap master locks), to learn to pick security pins.
For the same reason, Tri-Circle locks, usually infested with security pins are likewise, in my opinion, not a good choice of lock to start learning about picking security pins.
Hope this helps and best of luck,
...Mark